Characterizing a dc-SQUID and a Mo/TiW/Cu -trilayer transition-edge sensor array

Tutkielmassa määritettiin uuden suprajohtavan kvantti-interferenssilaitteen ja 256 pikseliä sisältävän sirun transitioreunailmaisimien ominaisuuksia. Komponentit vaativat erittäin matalia lämpötiloja ja suojauksen suurilta magneettikentiltä muuttuakseen suprajohtaviksi. Tärkeimmät mitatut ominais...

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Main Author: Helenius, Ari
Other Authors: Matemaattis-luonnontieteellinen tiedekunta, Faculty of Sciences, Fysiikan laitos, Department of Physics, University of Jyväskylä, Jyväskylän yliopisto
Format: Master's thesis
Language:eng
Published: 2017
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/55935
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author Helenius, Ari
author2 Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto
author_facet Helenius, Ari Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto Helenius, Ari Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto
author_sort Helenius, Ari
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description Tutkielmassa määritettiin uuden suprajohtavan kvantti-interferenssilaitteen ja 256 pikseliä sisältävän sirun transitioreunailmaisimien ominaisuuksia. Komponentit vaativat erittäin matalia lämpötiloja ja suojauksen suurilta magneettikentiltä muuttuakseen suprajohtaviksi. Tärkeimmät mitatut ominaisuudet olivat suprajohtavan kvantti-interferenssilaitteen signaalin vahvistuskerroin sekä kohina ja transitioreunailmaisimen transitiolämpötila, normaalitilan vastus, virta-jännite-käyttäytyminen, sekä kohina. Motivaationa tutkimukselle oli etsiä käytetyn mittalaite kokonaisuuden herkkyyden rajat sekä pyrkiä sovittamaan teoreettista mallia transitioreunailmaisimen kohinan ymmärtämiseksi. Korkean taajuuden kohinassa on käytössä erilaisia olettamuksia, mutta yhtenäistä teoriaa ei ole vielä yleisesti hyväksytty. A new superconducting quantum interference device and a transition-edge sensor from a 256 pixel chip was characterized in this thesis. In order to reach superconducting transition the components need extremely low temperatures and shielding from high magnetic fields. Important quantities measured were the amplification factor and the noise floor of the superconducting quantum interference device and the transition temperature, the normal state resistance, the current-voltage-characteristics, and the noise of the transition-edge sensor. The motivation for this research was to find the sensitivity limits of the measurement system and fit a theoretical model to better understand the noise properties of the transition-edge sensor. A unified theory is not yet determined for the high frequency noise, but there are a few different models.
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spellingShingle Helenius, Ari Characterizing a dc-SQUID and a Mo/TiW/Cu -trilayer transition-edge sensor array transitioreunailmaisin suprajohtava kvantti-interferenssilaite Transition-edge sensor TES Superconducting quantum interference device SQUID Fysiikka Physics 4021 suprajohtavuus kvanttifysiikka
title Characterizing a dc-SQUID and a Mo/TiW/Cu -trilayer transition-edge sensor array
title_full Characterizing a dc-SQUID and a Mo/TiW/Cu -trilayer transition-edge sensor array
title_fullStr Characterizing a dc-SQUID and a Mo/TiW/Cu -trilayer transition-edge sensor array Characterizing a dc-SQUID and a Mo/TiW/Cu -trilayer transition-edge sensor array
title_full_unstemmed Characterizing a dc-SQUID and a Mo/TiW/Cu -trilayer transition-edge sensor array Characterizing a dc-SQUID and a Mo/TiW/Cu -trilayer transition-edge sensor array
title_short Characterizing a dc-SQUID and a Mo/TiW/Cu -trilayer transition-edge sensor array
title_sort characterizing a dc squid and a mo tiw cu trilayer transition edge sensor array
title_txtP Characterizing a dc-SQUID and a Mo/TiW/Cu -trilayer transition-edge sensor array
topic transitioreunailmaisin suprajohtava kvantti-interferenssilaite Transition-edge sensor TES Superconducting quantum interference device SQUID Fysiikka Physics 4021 suprajohtavuus kvanttifysiikka
topic_facet 4021 Fysiikka Physics SQUID Superconducting quantum interference device TES Transition-edge sensor kvanttifysiikka suprajohtava kvantti-interferenssilaite suprajohtavuus transitioreunailmaisin
url https://jyx.jyu.fi/handle/123456789/55935 http://www.urn.fi/URN:NBN:fi:jyu-201711204308
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